Merge pull request #987 from ArthurHoaro/hotfix/security-issue

Fix security issue reported by @chb9

index.php

@@ -840,7 +840,7 @@ function renderPage($conf, $pluginManager, $LINKSDB, $history)
         }
 
         $data = array(
-            'search_tags' => implode(' ', $filteringTags),
+            'search_tags' => implode(' ', escape($filteringTags)),
             'tags' => $tagList,
         );
         $pluginManager->executeHooks('render_tagcloud', $data, array('loggedin' => isLoggedIn()));
@@ -870,7 +870,7 @@ function renderPage($conf, $pluginManager, $LINKSDB, $history)
         }
 
         $data = [
-            'search_tags' => implode(' ', $filteringTags),
+            'search_tags' => implode(' ', escape($filteringTags)),
             'tags' => $tags,
         ];
         $pluginManager->executeHooks('render_taglist', $data, ['loggedin' => isLoggedIn()]);

tpl/default/tag.cloud.html

@@ -26,7 +26,7 @@
           <input type="hidden" name="do" value="tagcloud">
           <input type="text" name="searchtags" placeholder="{'Filter by tag'|t}"
                  {if="!empty($search_tags)"}
-                 value="{$search_tags}"
+                    value="{$search_tags}"
                  {/if}
           autocomplete="off" data-multiple data-autofirst data-minChars="1"
           data-list="{loop="$tags"}{$key}, {/loop}"